There are no real technical issues in this sense here, the alloys are interchangeable. As to why you use it, most people are like you. They do because they do. I'll say no more - I do not want to re-start the great Sn63 vs. Sn62 debate. Kind Regards Mike Fenner Applications Engineer, European Operations Indium Corporation T: + 44 1908 580 400 M: + 44 7810 526 317 F: + 44 1908 580 411 E: [log in to unmask] W: www.indium.com Leadfree: www.Pb-Free.com -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Vandendolder, Ron Sent: Thursday, May 09, 2002 6:27 PM To: [log in to unmask] Subject: [TN] 63/37 solder paste with silver plated boards Dear Technetters, We would like to change from sn 62/pb/36/ag2 solder paste to standard tin lead eutectic for silver plated boards. Does anyone know if there are any issues with silver leaching that would force us to remain with the Ag paste. We started using the Ag paste years ago and now no one remembers why. The silver plating on the boards is very thin (immersion 3-8 micro inches). Regards, Ron VandenDolder Telaxis Communications ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------